Seiko DS-202 / DS-310 / DS-320 Vintage Synthesizer and Sequencer

Not an analog beauty here but an obscure vintage keyboards series made by Seiko in 80’s. The Seiko DS-202 keyboard is a simple home arranger (tones + rhythm + bass chord system) with a great analog chorus but an interesting thing here is that sounds generated are not made from subtractive, FM or PCM synthesis but from additive synthesis. And the Seiko DS-310 synthesizer module offers the possibility to fully edit it!

To finish, the Seiko DS-320 module is a sequencer, since the DS202 doesn’t have MIDI ports (you will have to get the Seiko DS-250 for MIDI capabilities, and to oscillator layers instead of one but no more rhythms or bass chords).